Process-kettle



J. F. WHITAKEH.

PROCESS KETTLE.

APPLICATION FILED nmz. 1915.

K Patented Dec. 14, E920.

3 SHEETS-SHEET I- WIM l. F. WHTAKER.

PROCESS KETTLE.

APPLlcATloN msn nmz, 1916.

em'se Dec. My 19%.

3 SHEETS-SHEET 2.

INVENTOR.

@MM `A TTORNEYS.

u mumluHmm.

Wi TNESSES:

BY 3mm,

l. F., WHHAKEL PROCESS KETLEi APPLICATION maumc, 1915.

Paimte Deo., Mtg M2M SSHEETS-SHEET 3.

IN V EN TOR.

UNITED STATE@ ement OFFICE.

Janne 11. wr-HTAKEB., or iroornsfron, irnINois, AssreNon To srnAGUE onNNING MACHINERY COMPANY, or onroneo, rttiNoIs, a CORPORATION OF ILLINOIS.

PROCESS-KETTLE Specification of Letters Patent.

Patented Dec. 14, 1920.

` Application filed December 2, 1916. Serial No. 134,717.

To all w from t may concern Be it lrnown that l; JAMES F. WHITAKER, a citizen of the United Statearesiding at Hoopeston, in the county of Vermilion and State of lllinois7 have invented new and useful Improvements in Processlettles, of which the following is a full, clear, concise., and exact description, reference being had to the accompanying drawing, forming a part of this speciiication.

My invention relates to process kettles and the like.

One of the objects ot my invention is to provide an improved means whereby the cover of the process kettle cannot be removed as long as there is any appreciable pressure within the kettle.

Furtherl objects will appear from the detailed description to follow and from the appended claims.

In the drawings, in which one form of my invention is shown,

Figure 1 is a vertical axial section of, a process kettle embodying my invention;

Fig. 2 is a side elevation of the upper part of the Vprocess kettle;

Fig. 3 is a top plan view of the lrettle;

Fig. 4 is a fragmentary sectional view of the upper part of the kettle showing the pressure actuated plunger; and showing the closure in sealing position;

Fig. 5 is a view similar to Fig. 4; but showing the closure released; and

Fig. 6 is a fragmentary plan view showing` the locking plate and pinion.

Referring to the drawings in detail; the processing apparatus shown comprises a sheet metal receptacle 10, heating coils or pipes 11 at the bottom of the receptacle 1G, abaslret 12;.in which the cans are placed, and closure means 13 for sealing the open upper end ot the receptacle 10.

rlhe closure means 13 comprise the metal lid or cover7 147 a pair of balls 15; pivotally mounted on the receptacle 10, and a Inanually actuated handle or arrn7 16, provided with lateral extensions 17, forming cam portions for engaging the bails 15 to cause them to bear on the lid 14; to force the lid into sealing engagement with the receptacle 10. The upper, outer edge of the lid; 14, is provided with an annular bead or liange 18; which reinforces the lid at this point and also affords a bearing for the bails 15. The lower outer portion of the lid 14 is provided with an annular channel 19 in which is located a packing ring 20 which engages the upper edge of the receptacle 10. The lid 14. is also provided with an annular flange 21, which iits inside the receptacle 10 to position the lid on the receptacle. The bails 15 are mounted in lugs 22 secured to the sides of the receptacle 10.

ln order that the handle 16 may be swung around to its proper position with respect to the balls 15, no matter in what position the lid 14 may be placed on the receptacle,

is mounted to swivel with respect tothe lid 14. For this purpose7 the bearing 23 in which the pintles or trunnions 24 are mounted, is swiveled on a shaft or pin 25, which is secured to the lid 14.

ln order to prevent accidents, means are provided for preventing the removal of the hd 14 so long as there is any appreciable steam pressure in the container 10. These means comprise an apertured plate 26 rotatably mounted on the pin 25, having a pin ion 27 formed integral therewith on its upper tace, for engagement with a pair of pins 28 mounted on an arm 29 carried by the handle 16, and a steam pressure actuated piston or plunger 30 slidably mounted in a cylinder 31, and having secured thereto, a locking pin 32, Jfor coperation with the openings 33 in the plate 26. The cylinder 31 has a reduced threaded portion 34 which is screwed into the lid 14 to hold the cylinder in `place on the lid. To prevent the piston 30 from dropping out of the cylinder 31 whenthere is no steam pressure in the receptacle 10, a number ot screws 35 may be threaded into the walls of the cylinder 31, the heads of these screws being located in position to be engaged by the piston 30 when in its lower-most position (Fig. 5). To insure the withdrawal of the pin 32 from the opening 33 in which it may have entered., a coil-spring 36 may be provided surrounding the pin 32, and having one end bearing against a shoulder 37 formed inthe reduced threaded portion 34, and its other end bearing on the piston 30. In order to permit the escape of the air, above the piston 30, as it moves up from the position shown in Fig. 5; vent holes 38 may be provided in the threaded portion 34.

ln order to prevent swiveling movement ot the handle 16 about the pin 25 when the handle is in sealing position; as in Figs. 2; 3,

and 4, the handle is provided with a pairoi laterally projecting lugs 39, which in the sealing position ot the handle 16 extend so close to the bails 15 as to prevent any appreciable swiveling movement. y

The cover of the receptacle may be provided with a safety valve 40 and thermometer' 41 of any suitable types. The bearing 23 is made in two parts topermit its assembly with respect to the pintles or trunnions 24 and these two parts may be held together by vmeans of screws 4:2. The pin 25 is held in place on the lid lll by means ot a nut i3 and the bearing 23 is held in place on the pin 25fby` means of nuts 4A.

The operationof my improved device is as follows:

The canned goods-are placedl in the basket 12, theV receptacle 10 is filled with water to a` suitableheight, the lid le is placed in position on the receptacle 1()7 the bails 15 are swung up over the lid le, the handle 16 is swung about the pin 25 until the cam members'lr' are in proper position to engage the bails 15 and the handle`16 is then pressed down to cause the cam members 17 to en-A gage the bails 15, to cause these hails to bear on the bead 18ct the cover 14 to force the cover into sealing engagement with the receptacle 10.

As the handle 16 is forced down, the pins 28 on the arm'29engage the teeth of the pinion'27, causing the pinion 27 and apertured plate 2.6 to rotate about the pin 25.

.Steam is then turned into the heating yhappen that none of the apertures were in position tol register with the pin 36 and it was attempted to raise the handle 16.l it could be raised only far enough to rotate the plate 26 until one of the openings 33 registered with the pin 82, when the pressure otthe steam-against the piston 30 would torce the pin 32 up into the registering openings preventing further raising of the handle 1:6.

The handle 16 cannot be raised suiiiciently to destroy the sealing engagement between the lid 14- and the receptacle 1() nor can it be raised high enough to bring the lugs or stops SSI-above the level of the bails 15, so that the handle cannot be swung sidewise about the pin 25, so long as there is any appreciable steam pressure vin the receptacle 10.

After the canned goods havebeen processed Vlong enough, the steam is turned ott from the Vpipes 11, and the steam pressure causing the locking pin 32 to be withdrawn.

i'rom the registering aperture in the lock- Ving plate 26 rThe handle 16 can then be raised to free the hails 'l5 which are swung out et the way. The lid 1-1 can then be litter'l oft, und the processed goods removed from the receptacle 10.

Having thus described my invention what l claim as new and desire to secure by Letters Patent is 1. rihe combination with a cooking receptacle having :in opening and a closure therefor, ol means tor manually forcing said closure into sealing engagement with :aid receptacle and means controlled by the steam pressure in the receptacle tor preventing the removal et said closure so long as there is any appreciable steam pressure in the reeepta ele. said ilireventing means comprising mans tor retaining said manually actuated means in position to hold the closure in sealing position.

2. The combination with a cooking receptacle having an opening and a closure theretor, ot means 'for manually forcing said closure into sealing engagement with said receptacle. and means controlled by the .steam pressure in the receptacle for preventing the removal of said .losure so long as there is any appreciable steam pressure in the receptacle, said preventing means comprising means for retaining said manually actuated nnans in position to hold the closure in sealin itien7 said manually actuated means ing a, member pivotally mounted on 1u receptacle and bearing on said closure, when in sealing position.

I3. The combination with a cooking receptacle having an opening anda closure thereifor7 oit manually actuated means Llor forcing said closure into sealing engagement with said receptacle and means controlled by the steam pressure in the receptacle for preventing the removal ot said closure so long as there is any appreciable steam pressure in the receptacle, said preventing means comprising means for retaining said manually actuated means in position to hold the closure in sealing position, said manually controlled means comprising a pair ol bailst pivot-ally mounted on said receptacle, und

bearing on said closure when in sealing positicn.

el.. Ilfhe combination with a cooking receptacle having an opening and a closure therefor, of n enually aetuated means for forcing said closure into sealing engagement with said receptacle and means controlled by the steam pressure in the receptacle for preventing the removal of said closure so long as there is any appreciable steam pressure in the receptacle, said preventing means comprising means tor retaining said manually actuated means in position to hold the olosure in sealing position, said manually controlled means comprising a pair of bails, pivotally mounted on said receptacle, and bearing on said closure when in sealing position, and a pivoted arm for actuating said bails.

5. lhe combination with a cooking receptacle having an opening and a closure therefor, ot manually actuated means for forcing said closure into sealing engagement With said receptacle and means controlled by the steam pressure in the receptacle for preventing the removal et said closure So long as there is any appreciable steam pressure in the receptacle, said preventing means comprising means for retaining said manually actuated means in position to hold the closure in sealing position, said manually controlled means comprising a pair of baile,-

pivotally mounted on said receptacle, and bearing on said closure When in sealing position, and a pivoted arm tor actuating said bails, said preventing means comprising also a member actuated by said arm, and a pressure actuated member for engaging said arm-actuated member, tor holding it against movement.

6. 'lhe combination with a cooking receptacle having an opening and a closure therefor, oit manually actuated means for forcing said closure into sealing engagement with said receptacle and means controlled by the steam pressure in the receptacle 'for preventing the removal el? said closure so long as there is any appreciable steam pressure in the receptacle, said preventingil means, comprising a iirst member actuated by said manually actuating means and a pressure actuated member tor engaging said first member ior holding it against movement.

7. The combination With a cooking recepi tacle having an opening and a closure therefor, oi' manually actuated means for forcing said closure into sealing engagement With said receptacle and means controlled by the steam pressure in the receptacle `tor preventing the removal ot said closure so long as there is any appreciable steam pressure in the receptacle, said preventing means, comprising an apertured lirst member actuated by said manually actuated means and a pressure actuated member for entering an aperture in first member 'for holding it against movement.

8. The combination with a cooking receptacle having an opening and a closure therefor, ot manually actuated means tor forcing said closure into sealing engagement with said receptacle and means controlled by the steam pressure in the receptacle tor preventing the removal of said closure so long as there is any appreciable steam pressure in the receptacle, said manually actuated means comprisingl a pair of bails pivotally mounted on said receptacle and bearing on said closure member When in sealing position, a member sWiveled on said closure, and an arm pivoted on said svviveled member for actuating said hails, said preventing means comprising means for retaining said manually actuated means in position to hold the closure in sealing position.

9. The combination with a cooking receptacle having an opening and a closure therefor, of manually actuated means for forcing said closure into sealing engagement With said receptacle and means controlled by the steam pressure in the receptacle for preventing the removal of said closure so long as there is any appreciable steam pressure in the receptacle, said manually actuated means comprising a pair of bails pivotally mounted on saidreceptacle and bearing on said closure member When in sealing position, a member svviveled on said closure, and an arm pivoted on said swiveled member for actuating said bails, said preventing means comprising means for retainin?` said manually actuated means in position to hold the closure in sealing position and tor preventing sWiveling movement of said swiveled member When the parts are in sealing position.

10. The combination with a cooking receptacle having an opening and a closure therefor, oi manually actuated means for :forcing said closure into sealing engagement with said receptacle and means controlled by the steam pressure in the receptacle for preventing the removal of said closure so long as there is any appreciable steam pressure in the receptacle, said manually actuated means comprising a pair of baile pivotally mounted on said receptacle and bearing on said closure member When in sealing position, a member sWiveled on said closure, and an arm pivoted on said swiveled member for actuating said bails, said preventing means comprising means tor retaining said manually actuated means in position to hold the closure in sealing position and i'or preventing suf'iveling movement oi said swiveled member when the parts are in sealing position, comprising a stop carried by said arm for engagement with one of said bails.

11. The combination with a cooking re* ceptacle having an opening and a closure therefor, of manually actuated means for forcing said closure into sealing engagement with said receptacle and means controlled .by the steam pressure in the receptacle i'or controlled means comprisinga pair. of bails, pivotally mounted on said` receptacle, and. bearing on said closure `When in sealing position, and a pivoted arm forV actuating said baiils, Vsaid preventing means comprising also a toothed member actuetecl'by said arm, and comprising: also 'a pressure actuated member for engaging said arm-actuated1member, for holding it` against movement.

12. Thevcombi'nation with a cooking receptacle having an opening and a closure therefonxof manually actuated means for forcing saicl closure intosealing engagement with said receptacleancl means controlled c by the steam pressure in; the receptacle for preventing the,- Removal-of said closure so long as there is any appreciable steam pressure in i the-, receptacle, said preventing means, comprising a rotatable toothedapertuned first member actuated by said manually actuating means and. a pressure actutuated member for entering the aperture '111 said irst member for holding it against movement.

1S-l. The combination with a cooking receptacle having an opening therein and :1 closure therefor, of means for manually forcing said closure into sealing engagement with said receptacle and means actuated by the Steam pressure in the receptacle for locking said. forcing means in sealing posit-ion.

l-n Witness whereof I have hereunto subscribed my name.

JAMES F. VVHITAKER. lVitnesses JOHN B. VALLBRIDGE, P. D. HART. 

